Center-bearing.



0 E. HOVEY 81. C. W; CHASE.

CENTER BEARING. APPUCATIOH FILED AUG. 29. 1916.

PatientP Aug 20,1918

.5 SHEETS-SHEET 1 mum-mas I O. E. HOVEY & C. W. CHASE.

CENTER BEARING.

APPLICATION FILED AUG.29. 9H5. I

Patented Aug. 20, 1918.

.METNESSES 3 SHEETS-SHEEF 3.

Ill

OTIS E. HOVEY, OF NEW YORK, N. Y.,

CENTERBEARII TG.

LQFtiSS-D.

certain new and useful Improvements in CentenBearings, of which the following is a s ecification.

(lhr invention relates to the construction of centerhearings for use on turntables, swinging draw bridges and similar structures which are arranged to rotate about a vertical axis of rotation of the structure, and while not restricted to such use more particularly relates to the construction of bearings known as turn-table centers.

One object of our invention is to provide a center; bearing having novel means whereby the superimposed load carried on the bearing is concentrated and is then distributed to the various parts or the bearing, and wherein great strength and rigidity are obtained without material increase in the vertical over-all height of the bearing.

Another object of our invention is to provide a center bearing having novel means whereby the bearing rollers are adjusted to uniformly distribute the load on the rollers and whereby the rollers are held or maintained in relatively adjusted position.

Another object of our invention is to provide a center bearing having improved means for opposing the end thrust of the rollers and for transforming the end thrust of the series of rollers into radially balanced forces.

A further object of the invention is to provide a center bearing having novel-means whereby the friction surfaces of are efi'ectively lubricated.

A further object of the invention is to provide a center bearing having novel means whereby the load is applied thereto or mounted thereon, and wherein eccentric loading of the bearing is avoided and inequalities in the application of the load to the bearing rollers are overcome and prevented.

A still further object of our invention is the provision of a center bearing having the novel constructions, arrangements, and con1- tapecification of Letters Patent.

Application filed August 29, 1916.

respectively, of New,

of improved construction the bearing.

roller box, and

Serial No. 117,423.

binations of parts illustrated in the drawhed, and

lugs, hereinafter more fully pointed out specifically in the appended claims.

Referring now to the drawings, forming part of this specification, Figure l is a plan a partly in section showing a center bearing or .turntable center constructed and arranged m accordance with our invention,

the upper roller box and tread plate being quarter of removed in the upper left hand the figure and the rollers and thrust rings also being removed in the, lower left hand quarter or the figure.

Fig. :2 is a sectional elevation of the apparatus shown in Fig. 1, the section being taken on the line ll-ll of Fig. It.

3 is an elevation of the apparatus shown in Figs. 1 and 2.

Fig. i is a sectional oetail, on an enlarged scale, showing a preferred construction and arrangement or" the roller boxes, rollers and roller tread plates, as made in accordance with our invention.

Fig. 5 is a sectional detail similar to that shown in Fig. 4 showing a modification in the construction and arrangement of the upper tread plate and upper roller box in a center bearing made in accordance with our invention.

Fig. 6 a detail elevation showing the construction and arrangen icnt oi the roller thrust washers and the seats therefor in the annular outer live roller ring forming part of our improved apparatus.

Fig. 7 is a section on the line 77 of 6, showing further details in the construe tion of the thrust washers forming partof our improved apparatus.

Fig. '8 is an elevation, partly in section, showing a modification in the construction of the saddle and saddle support on the bearing made in accordance with this invention. v

Fig. 9 is a similar elevr tion partly in section showing a further modification in the construction of the saddle and port made in accordance with our invention.

In the accompanying drawings the numeral 2' designates the bottom or lower 3 the top or upper roller box of a center hearing or turntable center made in accordance with our invention, and. mounted on the top of the roller box 3 is saddle sup like net aces r 'ao plates 1? and'32 relain, through which oil is supplied to the oil q ect've roller boxes 2 and 3 cellar 9 of the lower roller box, a removablenecessary or considered desirl9 being employed to close the upper end of this oil pipe.

upper roller boa construc- The upper roller box 3 as shown in Figs. 70 the upper surface 32 l and 3 has a long ridge or projection ad plate and coacting surface on its upper surface, this ridge which ex- A the upper roller box 3 are oppotends horizontally across the diameter of the l so as to concentrate the load box 3 being convex in cross section, and r t. of the Width of the tread plat-e mounted on the ridge'oll is a saddle -i having and corresponding center of the length of a concave groovein its lower surface of the the bearing rollers instead of having flat same or slightly liatter curvature as the cons shown in Figs. 2 and 4. c vex surface or the ridge 50. The radius of 1c upper roller box 3 has a downwardly .the concave and convex surfaces is made conical projection or post 37 which small enough to permit the saddle to rock as v posit'oned Within the roller box on the ridge 50, should the center of gravity and has an axial opening 38 therethrough. of loads on the girders 51 which rest upon m e lower end of the opening 38 has a counor are carried by the saddle d be placed in a hore 39 to receive the upper end of the inposition not directly above the vertical axis .l post or rojcction 5 on the lower roller of the center bearing. In such case the :2 (as he clearly seen in Fig. 2). saddle Will'readily slip on the ridge 50 and rface of the countenbore 39 which conto provide for lubrication of the contacting ith the post or projection 5 has a sc surfaces of the saddle and ridge 50 on the or oil grooves or slots 40 thereinto i'aupper roller box 8, oil grooves 52, 52, are sate lubrication of the contacting su-rprovided in the curved surface of the ridge so on the post and counterbore 39. 50, oil being supplied to these grooves rel rcncc to Fig. 2 of the drawings through oil pipes 53 screwed into threaded l be seen that the frustoconical projec holes in the saddle d. n or post 37 on the upper roller box 3, Shim plates 55 are used between the fiat flxtends downwardly into the oilresupper surface of the saddle 4:, and fiat botat @lVUll or cellar of theloWer roller box 2 betorn surfaces of the girders 51 of the turn- 7 the level of the pool of oil maintained table, swinging draw bridge or other strucherein, inclines or tapers upwardly and outture mounted upon the center bearing, to

' i to a point adjacent to the upper tread level or aline the structure on the center the frusto-conical post construction bearing, and to provide for vertical adjust- 1% great strength and rigidity in nient.

in; upper ller box While reducing the over- An axially central opening 56 in the sad all thiclniess or height or the center bearing dle 4, which is in register with the alined to a minimum, this construction and arholes 6 and 38 at theaxial center of the uprangeinent forming an important part of per and. lower bearing boxes 2 and 3, at-

our invention in preventing undue increase fords a convenient opening for leading elecin the height of the assembled bearing. tric Wires to the structure carried by or sup- The upper roller box 3 has an annular inported upon the bearing.

tegrally formed peripheral flange 41, this In the modified construction shown in.

flange having a beveled lower edge 42 which Fig. 8 the ridge 50 on the upper surface of extends into proximity to the oppositely bevthe upper roller box 3 is provided with a coneled upper edge 8 of the annular vertical cave recess 57 and the saddle 4c has a convex liangc? on the lower roller box 2. A dust ridge 58 of the same radius as the recess 57,

ring d3 conveniently formed or a thin strip the construction otherwise being thesame 50 of rolled metal, is reinovably secured on the as in Figs. 1, 2 and 3. I

periphery of the flange $1 on the upper In the further modification shown in Fig.

rt lcr box by means of cap screws alt so as 9 the lower surface of the saddle a and upto overlap the upper edge 8 of the flange 7 per surface of the ridge 50 on the upper and to prevent entrance to the interior of roller box3 both havecohcave recesses therethe assembled center bearing of dust or other in and a cylindrical pin 59 which engages finely divided solids which may be carried with the concave surfaces of the recesses is in suspension in the air. employed to transmit the load from the "l'apped openings do in the bosses to on saddle to the center bearing.

the outer face or the upper roller box 3 pro In the modifications of Figs. 8 and 9 a so rides means for the attachment of eye-bolts central opening 56 is provided in the saddle for use in handling the large and heavy 4 in the same manner and for the same purcastin forming the upper roller box in as pose as in'l igs. l and :2, and a vertical open scn'rl the pparatus. ing 60 in the pin 59 is in alincinent with the r-l t pedopeningdl 2.21 the upper roller openings 38 and 56 in the construction of box 3 has one end or a pipe 48 screwed theree Fig. 9. I

and forming ournals for said rollers, thrust.

Washers on said bolts said Washers extending through openings in said outer spacing ring into engagement with the rollers, and castle nuts on the bolts for adjusting the Washers on the bolts to equalize the end thrust of the rollers on said Washers, said rings having slots to receive the bolt heads melee oi shim mmemt my be obtained for five cents resell, iby alflrerising the fiommiselenea' of Patents set our hands.

Washers to prevent relative movement of the bolts and thrust OTIS E. HOVEY. CARL W. CHASE.

Washlnmem, JD. 6." 

